Storage Systems and Data Architecture Questions

Designing and operating storage layers and data architectures that meet durability, availability, performance, and cost requirements at enterprise scale. Covers storage technologies including block storage, file storage, and object storage; trade offs among replication, erasure coding, and snapshots; backup, recovery, retention, and archival strategies; capacity planning and tiering; caching and data locality; performance characteristics such as throughput, input output operations per second, and latency; disaster recovery and cross region replication approaches; metadata and namespace design; interactions between storage and databases or data warehouses; data lifecycle and retention policies for compliance; encryption at rest and access control for stored data; and operational concerns such as monitoring storage health, maintenance, migrations, and cost optimization.